Sand pump



Oct. 2, 1928. I 1,686,321

w. E. GROH SAND PUMP Original Filed April 5. 1926 Mw INVENTOR ATTORNEYPatented Get. 2, 1928 sann PUMP.

bed of gravel, sand and the like will be.

loosened and a proper quantity of water admitted with the loosenedmaterial into the mouth of the suction pipe; to provide a cutting headin connection with the suction vplpe constructed in a manner as toprevent choking of material in the headand mouth of the suction pipe andthereby obviate in-' terruption in the operation of the apparatus; andto provide in connection with the suction pipe and cutting head a shieldapplied in such manner as will prevent the cutter head from becoming,overwhelmed by caving material and the. operation thereof thusinterrupted. j V

These objects are accomplished by the construction illustrated in theaccompanying drawings, in which: i

Fig. 1 is a side elevation of thesuction pipe of a sand pump, andshowing the pres ent invention in connection therewith;

Fig. 2 is'a vertical section of a cutting head in connection with themouth ofthe suction pipe and including a portion of the shield;

Fig. 3 is a top plan view of the cutting head. and shield, and includinga portion of the suction pipe; and

Fig. t is a bottom plan view projected from Fig. 2.

The characters appearing in the description refer to parts shown in thedrawings and designated thereon by corresponding characters.

In Fig. 1 is shown a fragment of float or barge 1 which constitutes thesupport for the pumping apparatus of which the suction pipe 2 is a part.The suction pipe has a downturned mouth section 3 at its outer end and aflexible connection 4 at its inner end.

the latter admitting vertical adjustment of the suction pipe. Theflexible'connection 1s coupled by means of a pipe 5with a pump,

ing therein for the Application filed April e, 1926, Serial no- 9 51;Renewed July 1a, 1928.

ment therewith a cutter head 8 consisting of];

a cylinder-9 having an annular series of teeth 10 made in its lower end,and having at its top a v gear 11 forming a closed head therefor, saidgear being rotatably mounted on the pipe 3. An annularv collar 12 is;

fixed on the pipe 3 below the hub 13 of the gear'll, and a bracket 14 isfixed on, said pipe said hub so that verticalmovement of the gear onSaid pipe is prevented. The cutter head has fixed therein at a pointapproximately midway betweenjthe lower end of the pipe 3 and the-lowerend of the cylinder 9 a series of cross-bars 15 disposed transversely 1nthe cylinder to form a grat forth. p

A countershaft 16 is mounted in an arm 17 that extends from thebracket lt, and

purpose hereinafter set v also in a supportin arm 18v that is mounted onthe pipe 3 near its'upper end, and upon the lower end of saidcountershaft is fixed a pinion 19 that meshes with the gear 11 so thatasthe countershaft lG revolves the cutter-head is actuated accordinfilyiUpon the upper end of the countershaft 16 is fiXed abevel.geai;"20. thatmeshes with a compan- 1011 bevel gear 21, which latter bevelgear is ,Imounted upon and has splined relation with a propeller shaft 22 by whichthe counter- 24 provided tondmit of] a corresponding bending action ofthe propeller shaft when the suctionpipe is adjusted; lhe rear end ofthe section of the propeller shaft has connection with a gearing 26 bymeans of which the propeller shaft is actuated. V

A shield consisting of acurved plate 27 is mounted uponarms 28 thatproject from the bracket 14: and also upon a spider 29 that is'fixedupon the pipe 3 at a point thereon above said bracket. The lower end of.the shield 27 overhangs the gear 11 and the upperportion of the-cylinder9 so that the front. of the cutter head is sheltered thereby. Inoperating the invention suction is es-. tahlishedin the suction pipe.and the gearing 26 is driven in the usual manner from a suit-able sourceof power (not shown) such as is ordinarily provided for actuatingsimilar apparatus.

7 The'suction pipe is then lowered. into the water and the cutter head,

while being revolvedcomes into contact with the submerged earthenmaterial whlle-water is being drawn up through the cylinder and into thesuction pipe. As the earthen matter is loosened by the action of thecutter head and rush of water, it becomes broken up, .and the particlesof sand and gravel are drawn up through the suction pipe with the flowof water and are from thence disposed of in the usual manner through thepumping mechanism. Stones and other substances too large to pass betweenthe cross bars 15 are prevented by the grating from rising and chokingthe suction pipe, and when their accumulation in the lower end of thecylinder becomes objectionable, their removal is effected by elevatingthe suction pipe.

What I claim is j 1. In apparatus of the class described including avertically adjustable suction pipe and means for supporting same inadjusted positions, a cylindrical cutter head rotatably mounted on thesuction pipe in axial alinement therewith, a portion thereof extendingbeyond the mouth of said pipe, the upper end of said head being closed,and its lower end being toothed; a grating fixed in the head disposedbetween the toothed end of the head andthe mouth of saidpipe; a drivingmechanism including means for actuating same, having geared relationwith said cutter head; and a shield in supported relation'with saidsuction pipe and overhang,- 'ing the upper portion of said cutter head.

2. In apparatus of the class described ineluding a support, an angularsuction pipe in vertically adjustable relation with said support; arotatable cutter head mounted on said suction pipe and surrounding themouth thereof; a countershaft in supported relation with said suctionpipe and having gear ed relation with sald cutter head; an actuatingmechanism on said support; a propeller shaft having an universal jointtherein, one

portion of said propeller shaft having supported relation with saidsuction pipe and being longitudinally adjustable relative mounted uponsaid suction means at the mouth thereof; a mechanism, includingactuating means therefor, having geared relation with said cutter head;and a semi-cir-' cular shield insupported relation with said suctionmeans and overhanging the upper front portion of said cutter head.

4:; In apparatus of the class described including a supporting means, anangular suction pipe in verticallyadjustable supported connectionwithsaid means; a cylindrical cutter head rotatably mounted on said suctionpipe and surrounding the mouth thereof; a shield consisting of a curvedplate mounted upon said suction pipe a'nd'overhanging the upper portionof said cutter head and extending throughout its length in parallelrelation with the cylindrical wall of said cutter. head; and actuatingmeans for said cutter head.

5. In apparatus of theclass described, an excavating" means including amovable suction'pipe and rotating cutter head encompassing the intakeend of said pipe, and a semi-circular non-rotatable shield, the lowerportion of which overhangs the front upper 7 portion of said cutterhead, the lower end and rear portions of said cutter head being exposed.

In testimony whereof I afiix my signature.

WILLIS E. Gnorr.

